Improvement in oil-saver and casing-head



E. J. NORTHRUP. 'Oil-Saver and Casing-Head.

No. 200,471. Pat entedlFeb.'19, I878.

INVENTOR:

WITNESSES ATTORNEYS.

N4 PETERS, PHOTO-LITHQGRABHER, WASHINGTON. D C.

UNITED STATES PATENT QFFICE.

EDGAR J. N ORTHRUP, OF WARREN, PENNSYLVANIA.

IMPROVEMENT N OIL-SAVER AND CASING-HEAD.

Specification forming part of Letters Patent No. 200,471, dated February19,1878, application filed October 25, 1877.

To all. whom it may concern Be it known that I, EDGAR J. NORTHRUP, ofWarren, in the county of Warren and State of Pennsylvania, have inventeda new and Improved Oil-Saver and Casing-Head, of which the following isa specification Figure 1 is a vertical section of my improved device.Fig. 2 is a detail view of the pipe-packing. Fig. 3 is a detail view ofa split reducer.

Similar letters of reference indicate corresponding parts.

The object of my invention is to provide a head for an oil-well casing,by means of which the operation of boring the well may be continuedafter oil is reached.

The invention will first be described in connection with the drawing,and then pointed out in the claims.

Referring to the drawings, A is a head, which is bored cylindrically andscrewed onto the upper end of the well-casing B. There are lateralopenings 0 in the sides of the head, into which are screwed pipes forconducting oil to the tanks.

A rabbet, c, is formed in the inner portion of the head A, for receivingthe beveled flange b of the cone 1). Screws 0 pass through the sides ofthe head A, and bear upon the beveled surface of the flange 12, holdingthe flange down upon a packing-ring, d. The cone is bored and threadedinternally to receive the sleeve E, which is provided at its upper endwith a hand-wheel, F.

The cone D is bored entirely through, and is provided with an internalflange, c, which supports a removable beveled ring, f, having a centralaperture of sufficient size to receive the drill-operating cable. Uponthe beveled ring f an elastic packing-ring, g, is placed, between whichand the sleeve E washers are placed.

The drill is operated by a cable, which slides through the packing -ringg. When oil is reached it is prevented from escaping around the cable bythe packing-ring, and is conveyedaway by pipes screwed into the lateralopen-- ings 0. When the well is not flowing the packing-ring g isloosened, and the cable to which the drilling-tools are attached movesfreely through it; but when the oil begins to flow, the packing istightened by screwing down the sleeve E by means of the handwheel F. Thecone D is removed from the head whenever the drill is taken from thewell-easing.

When tubing is to be inserted in the casing B, the washers 'i,packing-ring g, and beveled ring f are removed, and the packing-ring kis placed upon the flange c, and is compressed by the sleeve E. The holethrough the elastic packing-ringk is flared or countersunk upon eachside, to facilitate the passage of the pipecouplings through it.

The pipe-couplings are rounded at each end, and the pipe is smoothed, sothat it will not tear or rou'ghen the elastic packing ring, throughwhich it passes.

When a pipe of the required length has been introduced it is supportedby placing the split sleeve Gin the sleeve E below one of the couplingsof the pipe, the flange l ofthe said split sleeve resting upon the upperend of the sleeve E, and supporting the pipe by engagement with thecoupling.

I am aware that it is not new to use a flanged sleeve, or to combine abox and reciprocating plunger with a casing tube having lateralopenings; but

What I claim is' 1. The beveled ring f and washers i, in combinationwith the sleeve E- and cone D, for adapting the same to an elasticcable-packing, as herein shown and described.

2. The packing-ring k, having an aperture flared or countersunk on bothsides, as and for' the purpose specified.

EDGAR J. NORTHRUP.

Witnesses:

HEPBURN MGOLURE, 'Tnos. KING. I

